当宿主免疫功能正常时,刚地弓形虫感染后可产生保护免疫,无临床症状,宿主呈
A.慢性感染
B.急性感染
C.隐性感染
D.全身播散
E.亚急性感染
参考答案:C
—If you want to sell your old house, why not put an _____in the newspaper?
—Good idea. [ ]
A. e-mail
B. advertisement
C. article
D. advice
下列可用于尼古丁替代并有助于戒烟的有()
A.尼古丁贴片
B.尼古丁咀嚼胶
C.尼古丁喷雾剂
D.尼古丁舌下含片
E.电子烟